LED bulb

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LED bulb

A light source that is created by a light emitting diode (LED). For decades, LEDs have been used as indicator lights on myriad products; however, starting in the 2000s, they began to replace incandescent, halogen and fluorescent bulbs. LEDs draw considerably less power and are up to 80% more efficient. Although claims are made for some bulbs lasting 25 years, one should expect a long lifespan under normal usage.

In Their Infancy
As of 2019, LED bulbs are still more expensive than incandescent bulbs; however, prices are constantly decreasing. Companies continue to experiment with numerous designs. For example, when red, green and blue LEDs are combined, they produce white light. Another method uses a blue LED and yellow or red phosphors.

New Lights - A Different Power Source
As incandescent bulbs are replaced with LED bulbs using the same Edison screw mount, the LED bulb must include AC to DC conversion. However, if the bulb's power source is DC such as from powered Ethernet, they are more efficient (see PoE and Edison base). See incandescent bulb, halogen bulb, fluorescent bulb, Acandescent bulb, OLED lighting and LED.

Incandescent vs. LED
The LED bulb on the right draws 3.5 watts but delivers the same brightness as the 45-watt bulb on the left. This LED bulb casts a very white light; however, LED bulbs run the gamut from warm yellow to white-blue (see color temperature).

They Sure Are Weird Looking
This Philips LED bulb hardly resembles incandescent lighting, which has been used for more than a century.

LED Night Light - 23 Times Less Power
Instead of the 7 watt incandescent bulb in the typical night light, this LED uses 0.3 watts. The blue arrow points to the single LED; the red arrow shows the light sensor.
References in periodicals archive ?
This study aims to evaluate the effect of LED lighting during incubation of Fayoumi eggs on hatchability (period length, dead embryos and percentage) and hatch chick performance (weight, vitality).
HONG KONG, Nov 28, 2017 - (ACN Newswire) - Heeding the rising demand for LED decorative lighting product, Bortex Global Limited ("Bortex") (the "Group", Stock code: 8118), a developing manufacturer and exporter of LED lighting products, will strengthen its product development capability that it may expand its product portfolio and by implementing stringent quality assurance measures push to secure a larger market share.
com)-- Recently released report by TechSci Research, "India LED Lighting Market Forecast & Opportunities, 2021," discusses the LED lights market in India.
Includes "RED LED Lighting, Blue LED Lights and ECO-FRIENDLY LED Lights
The technology used in automotive LED lighting has improved significantly in terms of heat-light ratio.
is pleased to announce its environmentally friendly LED lighting products are now being used in the redecorated indoor facilities of the Gukeng Freeway Service Area in Central Taiwan, another example of GlacialLight's LED luminaries being used around the world to provide energy-saving light of the highest quality.
LED lighting has the potential to be the lighting of the future in Saudi Arabia, according to Kumar Ramesh, industry manager, environment & technologies practice, Middle East, North Africa and South Asia, Frost & Sullivan
Dubai-based Eurostar LED Lighting systems showcased its latest range of LED lighting and solar products and solutions at a major exhibition and conference, held in Dubai recently.
In order to properly assess whether traditional light fittings should be replaced with LED lighting, there are some important factors that need to be considered first, including light fitting performance, system efficiency, reliability, availability of replacements or spare parts, mounting and installation options--which all affect the total cost of ownership.
Junair has developed an LED lighting system specifically designed for use in spraybooths, paint mixing rooms and preparation areas.
Summary: DUBAI - Eurostar has launched its new LED Lighting Systems in partnership with Jiuzhou Greeble, one of the world's leading lighting solution providers.